Kooks 1-7/8″ x 3″ Long Tube Headers & GREEN Catted X-Pipe for 2005 and 2008 Chevrolet Corvette C6 LS2 6.0L & 2008 LS3 6.2L
The Kooks 1-7/8-inch long tube headers and GREEN catted X-pipe kit transforms the 2005 and 2008 Corvette C6 base models with LS2 6.0L or early LS3 6.2L V8, replacing factory manifolds to deliver dyno-proven gains of 45 and 60 rear-wheel horsepower and 40 and 55 lb-ft of torque through equal-length primaries, merged collectors, and a high-flow 3-inch GREEN catted X-pipe that bolts directly to the OEM exhaust for seamless integration and unrestricted flow across the entire RPM range.
Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut flanges, full TIG welds, and 400-cell metallic substrate GREEN cats, this system supports over 750 HP while remaining 49-state emissions legal and preserving the factory dual-mode exhaust function on NPP-equipped cars. The precision design maintains ground clearance and heat shielding for daily-driven C6s without sacrificing the deep, aggressive V8 soundtrack that defines the early C6 era.
For 2005 and 2008 C6 base Corvette owners who demand track-proven performance with street-legal reliability, the 2160H421 kit is the championship-proven, complete bolt-on solution trusted by LS enthusiasts worldwide.
Key Features
- 1-7/8-inch equal-length primaries for strong mid-range and top-end power
- 3-inch GREEN high-flow metallic catalytic converters
- Full T304 stainless steel with TIG welds and 3/8-inch flanges
- Merged collectors for optimal scavenging
- Direct bolt-on to OEM exhaust retains NPP function where applicable
- Dyno gains of 45 and 60 RWHP and 40 and 55 RWTQ
Product Notes
- 49-state EPA compliant not for sale or use in California or CARB states without exemption
- Fits 2005 and 2007 C6 with LS2 6.0L and 2008 C6 with LS3 6.2L
- Includes O2 extensions and all necessary hardware
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime on stainless construction and 25,000 miles on catalytic converters to original purchaser.
Installation Notes
- Professional installation required lift and exhaust experience needed
- Remove factory manifolds and bolt headers to cylinder heads
- Connect catted X-pipe to collectors and OEM mid-pipe
- Torque flanges to 25-30 ft-lbs and run drive cycle for ECU
This Part Fits
| Year | Make | Model | Submodel/Engine |
|---|---|---|---|
| 2005 and 2007 | Chevrolet | Corvette | Base. LS2 6.0L |
| 2008 | Chevrolet | Corvette | Base. LS3 6.2L |
Note: Fits all C6 base coupe and convertible with factory exhaust. Manual or automatic.
What’s Included in the Purchase
- (2) 1-7/8″ x 3″ Long-Tube T304 Stainless Headers with Merged Collectors
- (1) 3″ x 3″ GREEN Catted Stainless X-Pipe
- Gaskets, Stage 8 Locking Bolts, Clamps and Hardware
- O2 Sensor Extensions
- Detailed Installation Instructions
- Part Number: Kooks 2160H421
Why Choose Kooks?
- Over 60 years of championship-winning exhaust engineering
- Handcrafted in the USA from T304 aircraft-quality stainless steel
- Limited lifetime warranty and dyno-proven performance
Frequently Asked Questions
- Q: Does this fit my 2006 C6 manual?
A: Yes, direct bolt-on for all 2005 and 2008 C6 base models manual or auto - Q: Will it keep NPP valves working?
A: Yes on 2008 NPP cars, full dual-mode function retained - Q: How loud is it?
A: Aggressive V8 rumble at WOT, refined and quiet at cruise - Do Kooks headers require a tune after installation?
Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation. - Will these headers void my factory powertrain warranty?
Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure. Consult your dealer for specifics on your situation. - Q: Do these Kooks headers require a tune after installation?
A: Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation. - Q: Will Kooks headers void my factory powertrain warranty?
A: Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure in question. Consult your dealer for specifics. - Q: What warranty does Kooks provide?
A: Kooks products are backed by a limited lifetime warranty to the original purchaser against defects in materials and workmanship. Racing and competition use applications may have specific warranty exclusions. Contact Kooks Performance directly for warranty details.
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Heavy-duty box with foam protection.
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